WIŚNIEWSKI, A. Competitiveness of sports market enterprises: determinants, classification, challenges. Ekonomia i Prawo. Economics and Law, [S. l.], v. 19, n. 2, p. 367–377, 2020. DOI: 10.12775/EiP.2020.025. Disponível em: https://apcz.umk.pl/EiP/article/view/EiP.2020.025. Acesso em: 20 feb. 2024.